Hey guys! I haven't been here too much lately. I've been spending my time dialing in these two great subs. The main reason for this post is to thank Serge for his well written directions on setting up his subs.

I found his directions to be well written and easy to follow and were vital to me in setting up the Fathoms. I'm certain if he were here, he could tweak them even better than I have, but they certainly are something special after spending the time with them.

Thanks Serge!

Gordon

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Martin Logan Spire & JLAudio Fathom F112 (2)
C1000/T, MD1K, MC501 (2) MR-88
WireWorld 5^2 Eclipse speaker, 6.0 Eclipse IC, Silver Electra PCs
RealTraps (8)
Symposium Rollerblocks 2+, Black Diamond Racing Mk 3 Pits under speakers

Glad it helped. Enjoy your subs!

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System 7.1:
Wilson Sasha/Mezzo/Watch surrounds
D'Agostino Momentum x3 amps
Bryston 4B SST2 x2 amps
Krell S1200U pre/pro
Oppo Blu
Sony Blu changer
McIntosh MS300 music server
EAR/Yoshino Acute III tubed CDP
Transparent Ultra cabling
JL Audio F212 Sub
Lumagen video processor
JVC RS-35U projector
Stewart Screen

Good thread. One other thing left out, Serge recommended that I place my sub in the left corner of my room and turn the JLF112 perpendicular to the back wall which means the bass driver is parallel to the long wall in my room and it made a huge difference. I'm guessing the explanation is that low frequecies have a longer wavelength., in my case this particular wall is 32 feet long and opens into another room. Like realestate, location, location, location; room placement is very important. I started out trying to center my sub. between my two speakers and the sound was not very good.

Everyone should try an external x-over/bass management once, then return it, if they do not like it compared to just using a sub(s) at your speakers roll off.

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McIntosh 501's, Sonus Faber Elipsa speakers,McIntosh LS 360's Full Surround Speakers in Home Theater. (2) MR85, MCD201, C46 Pre, (2) JL F113 Fathom Subs, (1) JL F112, MA2275 Int Amp, Sonus Faber Cremona Auditor Speakers, Project Turntable. Blackbird Cart, Clearaudio Concept table, MC, Oppo 95 120 inch screen and an Epson 1080UB Projector. Nothing better then Pipes/Cigars, and a Great movie with the JL subs Pounding. MAC1700 Receiver and ML-1C speakers

I just bought a JL sub. Most listeners set the sub too loud

So very true.

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AMP's: D'Agostino Momentum's
Pre Amp: Mcintosh C-1000 & C-1000P
Sources: McIntosh MCD-1100 & MS-300, Olive 4HD, SonoS, Pro-Ject 6 PerspeX
Speakers: MBL 111F
Cables: Transparent Ultra MM2 & Reference MM2 & Powerlink MM2x

What are you smiling about?

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FLORIDA
MX136, C15, MC206, MC162(2) MC402, MC1.2KW(12) MC2KW(2) MQ109B, MR88, MS300(2) MCD301, MCD1100, MS750(2) MVP881, MCD1000, MDA1000, C1000C, C1000P/T, MPC1500, HT3F(2) WS350(2) XRT2K, XCS2K, XR27(2) XCS350(2) R778, OPPO-BDP95, GRACE M902 AMP, PS AUDIO PPP(8) PUREPOWER 1050(4) RGPC 600(8) RGPC 1200(20) RGPC POLE PIG(4) JL GOTHAM SUBS(2) LUMAGEN RADIANCE SCALER, SONY VPH-G90U PROJECTOR, SVS LIFT, STEWART STUDIOTEK 110" MOTORIZED SCREEN, ASC ACOUSTIC PANELS & BASS TRAPS, CINEMA-TECH SEATING, SONOS ZP90-W4S MOD, SYMPOSIUM ROLLERBLOCKS, SENNHEISER HD800, GOLD LION TUBES, WIREWORLD GOLD ECLIPSE CABLES & SILVER ELECTRA PC'S
View "The Room" here:
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CAPE COD
MX150, MC501(2) MC1.2KW(10) MC2301(2) MQ109B, MR88, MS750(2) MVP881, MEN220, MCD1100, MDA1000, C1000C, C1000P/T, MPC1500, HT3F(2) XRT2K, XCS2K, XR27(2) CAMBRIDGE NP30, ELITE BDP-09FD, BENCHMARK DAC-1 HDR, BRYSTON BDA-1 DAC, OPPO-BDP95, SPL PHONITOR, PS AUDIO PPP(10) PUREPOWER 1050(4) RGPC 1200(15) JL GOTHAM SUBS(2) JL FATHOM F113(2) SOUND ANCHOR SUB STANDS(2) LUMAGEN RADIANCE SCALER, SONY VPH-G90U PROJECTOR, STEWART STUDIOTEK 120" SCREEN, SONUS FABER STRADIVARI, URC MX-6000 REMOTE, NAKAMICHI DRAGON, TEAC X2000R R2R, SONOS ZP90-W4S MOD, ASC ACOUSTIC PANELS & BASS TRAPS, FORTRESS SEATING, HRS DAMPING PLATES & NIMBUS COUPLERS, SYMPOSIUM ROLLERBLOCKS, ULTRASONE ED-10, GOLD LIONS, WIREWORLD GOLD & PLATINUM ECLIPSE CABLES & SILVER ELECTRA PC'S
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Analog Rig: CLEARAUDIO INNOVATION WOOD TT, CA OUTER RING & CLAMP, UNIVERSAL ARM w/ Da VINCI' CART, 2nd UNIVERSAL ARM w/ GOLDFINGER CART, CLEARAUDIO DOUBLE SMART MATRIX CLEANER, HRS-MXR CUSTOM 4V RACK-GLOSS BLACK w/ M3X 1921 SHELVES, AESTHETIX RHEA SIGNATURE PHONO-PRE, PS AUDIO PPP, RGPC 1200, WIREWORLD SILVER ECLIPSE CABLES & SILVER ELECTRA PC'S
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Game Room: BRYSTON BP-26 PRE-AMP, BDA-1 DAC, BDP-1 MEDIA PLAYER, BCD-1 CD PLAYER, MPS-2 POWER SUPPLY, 28B-SST2 MONOBLOCKS, MAGNUM DYNALAB MD-105T TUNER, OLIVE 04HD, CAMBRIDGE UNIVERSAL BR PLAYER, KRELL KID, RGPC 1200(2) PS AUDIO PPP(2) SONUS FABER AMATI FUTURA'S IN RED FINISH, JL AUDIO IWS-SYS-2, SALAMANDER SYNERGY TRIPLE 30 RACK, SONY KDL-52XBR9, URC MX-980 REMOTE, WIREWORLD SILVER ECLIPSE CABLES & SILVER ELECTRA PC'S
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New Reference System: BURMESTER 911 MK3 AMP(2), 089 CD PLAYER, 088 PRE-AMP, 100 PHONO PRE-AMP LOADED, 111 MUSIC SERVER, 948 POWER CONDITIONER, AVID ACUTUS REFERENCE SP TT, GRAHAM PHANTOM II SUPREME ARM, BENZ MICRO LP-S CART, DYNAVECTOR XV-1S CART, HRS-SXR CUSTOM 2V-3V-2V RACK w/ M3X 1921 SHELVES, WIREWORLD PLATINUM CABLES & PC'S, SONUS FABER AIDA SPEAKERS RED

Personally, I like the sub louder for movies, but for me, it kills music, if set too loud.

Like a high performance exhaust drone, that hides 1/3 of the music.
I think I have a low, not normal, threshold with subs and music. As my friends run their subs very hot compared to their room correction AVR's suggestion. I just bump it up slightly.

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McIntosh 501's, Sonus Faber Elipsa speakers,McIntosh LS 360's Full Surround Speakers in Home Theater. (2) MR85, MCD201, C46 Pre, (2) JL F113 Fathom Subs, (1) JL F112, MA2275 Int Amp, Sonus Faber Cremona Auditor Speakers, Project Turntable. Blackbird Cart, Clearaudio Concept table, MC, Oppo 95 120 inch screen and an Epson 1080UB Projector. Nothing better then Pipes/Cigars, and a Great movie with the JL subs Pounding. MAC1700 Receiver and ML-1C speakers

A few days after this post I had my second JL F112